Hebei Haihao High Pressure Flange Pipe Fitting Group Co was established in 1982, located in Mengcun County—the hometown of pipe fittings in China. We are the first and one of the biggest companies which can produce pipe fittings,flanges and steel pipes. Our Group owns subsidiaries, there are more than 600 employers, including 85 technologists. The Group covers 850,000 square meters and owns fixed assets RMB 300,000,000.

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Forged Pipe Fittings


Steel flange is a method of connecting pipes, valves, pumps and other equipment to form a piping system,provides easy access for cleaning, inspection or modification.

Butt Weld Pipe Fittings


Butt welding is a connecting method of welding.This process is the basis of the piping system. It is used to weld two pipes together and welded around the seams without any overlapping.

Carbon Steel Pipes


Pipe is a hollow tube with round cross section for the conveyance of products,including seamless steel pipe and welded steel pipe. The products include fluids, gas, pellets, powders and more.

Steel Flange,Pipes and Pipe Fittings

A234 WPB steel pipe fittings

Haihao pipe fittings factory is a leading manufacturer of A234 WPB carbon steel pipe fittings.What is A234 WPB pipe fittings?  It means the pipe fittings which material is A234 WPB standard specif ...

Steel Flanges

Weld Neck FlangeSlip On FlangeThreaded FlangeBlind FlangePlate FlangeSocket Weld FlangeLoose Flange(Lap Joint Flange)Orifice FlangeIntegral Flange(Long Weld Neck Flange)Spectacle FlangeNon-Standar ...

Long Radius Elbow(LR Elbow)

Long Radius Elbow(LR Elbow)The Long radius elbow means the bending radius of elbow is 1.5 times to the diameter of the elbow . 1.5D long radius elbows are the most popular elbows in the projects ...

Concentric reducer (Con reducer)

As we known about the pipe fittings, the pipe reducer is used to connect two pipes of different diameters. The pipe reducers are divided into two types: concentric reducer(Con reducer) and eccentr ...

Straight Tee

A Straight Tee means a tee of pipe fitting which the branch outlet has a 90 degree direction turning from the main pipe of the tee . Commonly people consider the straight tee as the equal tee, it ...

Short Radius Elbow(SR Elbow)

The Short radius elbow means the bending radius of elbow is 1.0 time to the diameter of the elbow . Because of the short bending radius, the elbow length is shorter, the cost and price is lower. C ...